Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/ScotsMusicalMuseumV4/tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4875-tune.ps) >>/Users/jc/w/tmp/Tune-4875-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ScotsMusicalMuseumV4/tune.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-4875-get.log 13401 Log file, useful mostly for debugging
Tune-4875-tune.abc 157 ABC music file with the extracted tune(s)
Tune-4875-tune.ps 6 PostScript
Tune-4875-tune.txt 157 Plain-text file with the extracted tune(s)
Tune-48751-get.log 1403 Log file, useful mostly for debugging
Tune-48752-MMM2.abc 145 ABC music file with the extracted tune(s)
Tune-48752-MMM2.txt 145 Plain-text file with the extracted tune(s)
Tune-48752-get.log 3102 Log file, useful mostly for debugging
Tune-48755-get.log 6138 Log file, useful mostly for debugging
Tune-48756-get.log 4693 Log file, useful mostly for debugging
Tune-48759-get.log 1403 Log file, useful mostly for debugging
These files should be available for 24 hours.